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HIGH POWER RESISTOR - Non Inductive Chassis Mount, Screw Terminal
The content of this specification may change without notification 02/19/08 Custom solutions are available.
HOW TO ORDER RST 25-A 4X-100-100 J Y B
Packaging B = bulk TCR (ppm/C) Z = +100 Tolerance J = +5% K= +10% Resistance 2 (leave blank for 1 resistor) Resistance 1 R10 = 0.1 ohm 1R0 = 1.0 ohm 100 = 10 ohm 101 = 100 ohm 102 = 1.0K ohm
FEATURES
TO227 package in power ratings of 150W, 250W, 300W, 600W, and 900W M4 Screw terminals Available in 1 element or 2 elements resistance Very low series inductance Higher density packaging for vibration proof performance and perfect heat dissipation Resistance tolerance of 5% and 10%
APPLICATIONS
For attaching to air-cooled heat sink or water cooling applications Snubber resistors for power supplies Gate resistors Pulse generators High frequency amplifiers Dumping resistance for theater audio equipment on dividing network for loud speaker systems
Screw Terminals/Circuit 2X, 2Y, 4X, 4Y, 4Z Package Shape (refer to schematic drawing) A or B Rated Power 15 = 150 W 25 = 250 W 20 = 200 W 30 = 300 W Series
High Power Resistor, Non-Inductive, Screw Terminals
60 = 600W 90 = 600W (S)
CONSTRUCTION
1 2 3 4 5 6 Case Filling Resistor Terminal ALO. ALN Ni Plated Cu
DIMENSIONS (mm)
Shape A B RST20-B2X, B2Y, B4Z RST30-B2X, B2Y, B4Z RST60-B2X, B2Y, B4Z RST15-B4X, B4Y RST25-B4X, B4Y RST55-B4X, B4Y 38.0 0.2 25.0 0.2 11.8 0.5 4.2 0.1 13.0 0.3 15.0 0.4 30.0 0.1 10.0 0.2 M4, 10mm
Series
RST20-A2X, A2Y, A4Z
RST15-A4X, A4Y
RST25-A4X RST30-A4Z
RST60-A4X RST90-A4Z
Depth of terminal screw M4 10mm, screws are excluded
A B C D E F G H J
38.0 0.2 25.0 0.2 13.0 0.5 4.2 0.1 13.0 0.3 15.0 0.4 30.0 0.1 10.0 0.2 M4, 10mm
38.0 0.2 25.0 0.2 15.0 0.5 4.2 0.1 13.0 0.3 15.0 0.4 30.0 0.1 12.0 0.2 M4, 10mm
38.0 0.2 25.0 0.2 15.0 0.5 4.2 0.1 13.0 0.3 15.0 0.4 30.0 0.1 12.0 0.2 M4, 10mm
CIRCUIT LAYOUT
SCHEMATIC
Body Shape A
Body Shape B
American Accurate Components, Inc.
188 Technology Drive, Unit H, Irvine, CA 92618 TEL: 949-453-9888 FAX: 949-453-8889
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HIGH POWER RESISTOR - Non Inductive Chassis Mount, Screw Terminal
The content of this specification may change without notification 02/19/08
SPECIFICATIONS
Series RST15*RST15RST20*RST20RST25*RST25RST30*RST30RST55RST60RST60RST90Body Type/Circuit A4X, A4Y B4X, B4Y A2X, A2Y, A4Z B2X, B2Y, B4Z A4X B4X, B4Y A4Z B2X, B2Y, B4Z B4X, B4Y A4X B2X, B2Y, B4Z A4Z Rated Power 150 W 150 W 200 W 200 W 250 W 250 W 300 W 300 W 550 W 600 W 600 W 600 W Resistance Dual Dual Single Single Dual Dual Single Single Dual Dual Single Single Resistance Range () 0.1 ~ 1.0K 0.1 ~ 1.0K 0.1 ~ 1.0K 0.1 ~ 1.0K 1.0 ~ 1.0K 0.1 ~ 1.0K 1.0 ~ 1.0K 0.1 ~ 1.0K 50.0 ~ 1.0K 100 ~ 1.0K 50.0 ~ 1.0K 100 ~ 1.0K EIA Values E24 E24 E24 E24 E24 E24 E24 E24 E24 All E24 All TCR (ppm/C) 100 100 100 100 100 100 100 100 100 100 100 100 Tolerance 5% 5% 5% 5% 5% 5% 5% 5% 5% 10% 5% 10% Operating Temp. -55C ~ +155C -55C ~ +120C -55C ~ +155C -55C ~ +120C -55C ~ +120C -55C ~ +120C -55C ~ +120C -55C ~ +120C -55C ~ +120C -55C ~ +155C -55C ~ +120C -55C ~ +155C
PERFORMANCE
Item Rated Power Maximum Applied Voltage Withstanding Voltage Load Life Humidity Temperature Cycle Short Time Overload Soldering Heat Solderability Insulation Resistance Vibration Flammability RST15*, RST20* Per specification E = P*R 2500V DC (1.0% + 0.05 ) (1.0% + 0.05 ) (1.0% + 0.05 ) (0.25% + 0.05 ) n/a n/a > 1,000 Meg ohm (0.25% + 0.05 ) UL94V-O All other Series Per specification E = P*R 2500V DC (1.0% + 0.05 ) (1.0% + 0.05 ) (1.0% + 0.05 ) (0.25% + 0.05 ) (0.25% + 0.05 ) n/a > 1,000 Meg ohm (0.25% + 0.05 ) UL94V-O Condition RST15, RST20: with heat sink, 0.9 K/W All Other Models: at flange -55C ~ +25C 60 seconds 25C, 90 min on, 30 min off, 1000 hrs 40C, 90 ~ 95% RH, DC 0.1W, 1000 hrs *70C, 90 ~ 95% RH, DC 0.1W, 1000 hrs -55C, 30 min., +155C, 30 min.; 20 cycles -55C, 30 min., +120C, 30 min.; 20 cycles Rated Power x 2.5, 2 sec. with heat sink 350C 5C, 3 seconds Between Terminals and Flange
PULSE OPERATION DURABLITY
1 = RST30- B2X, B2Y, B4Z 2 = RST25-B4X, B4Y (one resistor) Pulse Peak Power (Watts) The figure illustrating pulse load shows the safe operation area, which measured experimentally and which can operate with a rectangle pulse of a long cycle. However, data does not guarantee the operation about the continuous pulse load of a short cycle in which a resistor carries out a temperature rise with average electric power. Pulse peak power recommends operating within the rated electric power. Pulse operation of models RST60-B2X, B2Y, B4Z are the same as models RST30- B2X, B2Y, B4Z.
NOTES
For RST60-A4X and RST90-A4Z When water cooled heat sink is used, maintaining a flange temperature of 25C is difficult. When the flange temperature is over 25C, the rating will be decreased as illustrated in the derating curve. In short pulse applications, the peak power can not exceed over 600W.
Pulse Width (seconds)
American Accurate Components, Inc.
188 Technology Drive, Unit H, Irvine, CA 92618 TEL: 949-453-9888 FAX: 949-453-8889
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HIGH POWER RESISTOR - Non Inductive Chassis Mount, Screw Terminal
The content of this specification may change without notification 02/19/08
DERATING CURVE
RST15-A4X, A4Y % Rated Power RST20-A2X, A2Y, A4Z % Rated Power RST25-A4X RST30-A4Z
Flange Temperature (C) RST15-B4X, B4Y RST20-B2X, B2Y, B4Z % Rated Power RST25- B4X, B4Y RST30- B2X, B2Y, B4Z
Flange Temperature (C) RST55-B4X, B4Y % Rated Power RST60-A4X, B2X, B2Y, B4Z
Flange Temperature (C)
Flange Temperature (C)
TEMPERATURE RISE
RST20-A2X, A2Y, A4Z with 0.2K/W heat sink Temperature Rise (C) RST30-A4Z with 0.1K/W heat sink Temperature Rise (C)
RST30- B2X, B2Y, B4Z with 0.1 C/W heat sink Temperature Rise (C)
RST60-AX4, B2X, B2Y, B4Z Temperature Rise (C)
American Accurate Components, Inc.
188 Technology Drive, Unit H, Irvine, CA 92618 TEL: 949-453-9888 FAX: 949-453-8889
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